Methyl methacrylate

Cas Number


Other Names

Methyl 2-methylpropenoate

methyl methacrylate



The formula



Methyl methacrylate (MMA) is an organic compound. This colourless liquid, the methylester of methacrylic acid (MAA) is a monomer produced on a large scale for the production of poly(methyl methacrylate) (PMMA).

Physical and Chemical Properties
Physical state and Appearance : Liquid
Boiling Point : 100 °C (212 °F)
Melting point : -48 °C (-54.4 °F)
Specific Gravity : 0.936 (Water = 1)
Vapor Pressure : 29 mm of Hg (@ 20 °C)
Vapor Density: 3.45 (Air = 1)
Solubility: Partially soluble in cold water.
Purity ,%: 99.5 min
Water: 0.05 max °c): 0.953 ~ 0.958
Acidity (ASAA): 50 max
Inhibitor (MEHQ): 90 ~ 110

1. The principal application, consuming approximately 80% of the MMA, is the manufacture of polymethyl methacrylate acrylic plastics (PMMA)

2. Methyl methacrylate is also used for the production of the co-polymer methyl methacrylate-butadiene-styrene (MBS), used as a modifier for PVC

3. Methyl methacrylate (MMA) is polymerised to make homopolymers and copolymers with the largest application being the casting, moulding or extrusion of polymethyl methacrylate (PMMA) or modified polymers

4. A major application of MMA polymers and copolymers is in surface coatings and impregnation resins to give colour fastness and weather-resistance properties to latex paints, lacquer resins and stoving enamels